Maps WithMe
This item appears on page 75 of the February 2012 issue.
MapsWithMe, a free app for the iPhone, iPad and iPod Touch, allows you to download maps of destinations worldwide for offline use, avoiding costly data-roaming fees. Some countries, like Germany and France, have maps broken down by state.
The maps used by the application are from community-created OpenStreetMap data, which may be less accurate in rural areas than commercial maps. Download MapsWithMe from the App Store.